How to compare Christian pastor credentials?

Requirements for ordination vary across denominations. Baptists and Pentecostals, for example, will ordain people without even a high school diploma, whereas many of the more liturgical denominations require masters and doctoral level degrees before one can even preach. How then, is one able to assess the academic qualifications of ordained clergy across denominations? In other words, is there a resource that would assist one in gauging the stringency of the qualification process before one is allowed to serve as preist, minister, or pastor? And, what common requirements for ordination can be compared across denominations, so as to be able to compare similiar qualifications across denominational lines.